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08:18
Design and Use of a Full Flow Sampling System (FFS) for the Quantification of Methane Emissions
Published on: June 12, 2016
A survey on gas sensing technology.
Xiao Liu1, Sitian Cheng, Hong Liu
1School of Electronic and Information Engineering, Beihang University, Beijing 100191, China. xliu.nk@gmail.com
Sensors (Basel, Switzerland)
|September 27, 2012
Summary
This review compares various gas sensing technologies, focusing on enhancing sensor calibration and performance indicators like sensitivity and selectivity for improved gas detection.
Area of Science:
- Materials Science
- Chemical Engineering
- Environmental Science
Background:
- Gas detection relies heavily on sensing technology, with ongoing research into enhanced calibration methods.
- Existing gas sensors face limitations in applicability and performance, necessitating continuous development.
Purpose of the Study:
- To review, evaluate, and compare existing gas sensing technologies.
- To discuss recent advancements and future development directions in gas sensor calibration.
- To analyze key performance indicators such as sensitivity and selectivity.
Main Methods:
- Classification of sensing technologies based on property variations (electrical, optical, etc.).
- Detailed examination of electrical variation methods using various sensing materials (semiconductors, polymers, CNTs).
- General presentation of non-electrical sensing methods (calorimetric, acoustic, chromatographic).
Main Results:
- A comprehensive classification of gas sensing technologies is presented.
- Factors influencing sensor sensitivity and selectivity are analyzed.
- Improved approaches for enhancing sensitivity and selectivity are identified.
Conclusions:
- The review provides a comparative overview of current gas sensing technologies.
- Understanding factors affecting sensitivity and selectivity is crucial for sensor improvement.
- Future research should focus on addressing limitations and enhancing performance indicators for advanced gas detection.
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